#include<bits/stdc++.h>
#define ONLINE_JUDGE
#define ll long long
#define ull unsigned long long
using namespace std;

const int N = 1e6 + 10, INF = 0x3f3f3f3f;

int k;
long double a[300], ans[10];

void solve()
{
    cin >> k;
    int n = pow(2, k);
    for (int i = 0;i < n;i++) {
        long double x, y;
        cin >> x >> y;
        a[i] = x * x + y * y;
    }
    for (int i = 0;i < k;i++)
        for (int j = 0;j < n;j++)
            if ((j >> i) & 1) ans[i] += a[j];

    cout << fixed << setprecision(9);
    for (int i = 0;i < k;i++)
        cout << 1 - ans[i] << ' ' << ans[i] << "\n";
}

signed main()
{
    // ios::sync_with_stdio(0);
    // cin.tie(0);cout.tie(0);
#ifndef ONLINE_JUDGE
    std::istringstream in(R"()");
    std::cin.rdbuf(in.rdbuf());
#endif
    int T = 1;
    // cin>>T;
    for (int i = 1;i <= T;i++) {
        solve();
    }
}